/*
 * Copyright (c) 2010, Google Inc. All rights reserved.
 * Copyright (c) 2012, Collabora Ltd.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#if ENABLE(ACCELERATED_2D_CANVAS) || USE(3D_GRAPHICS)

#include "DrawingBuffer.h"

#include "Extensions3D.h"

namespace WebCore {

DrawingBuffer::DrawingBuffer(GraphicsContext3D* context,
                             const IntSize& size,
                             bool multisampleExtensionSupported,
                             bool packedDepthStencilExtensionSupported,
                             PreserveDrawingBuffer preserveDrawingBuffer,
                             AlphaRequirement alpha)
    : m_preserveDrawingBuffer(preserveDrawingBuffer)
    , m_alpha(alpha)
    , m_frontColorBuffer(0)
    , m_separateFrontTexture(false)
{
}

DrawingBuffer::~DrawingBuffer()
{
}

#if USE(ACCELERATED_COMPOSITING)
void DrawingBuffer::prepareBackBuffer()
{
}

bool DrawingBuffer::requiresCopyFromBackToFrontBuffer() const
{
    return false;
}

unsigned DrawingBuffer::frontColorBuffer() const
{
    return colorBuffer();
}

void DrawingBuffer::paintCompositedResultsToCanvas(ImageBuffer*)
{
}
#endif

}

#endif
